how to use sliverpersistentheader widget
class _SliverAppBarDelegate extends SliverPersistentHeaderDelegate { _SliverAppBarDelegate({this.child}); final Widget child; @override double get minExtent => 100; //Change these values for your likings @override double get maxExtent => 250; @override Widget build( BuildContext context, double shrinkOffset, bool overlapsContent) { return child; } @override bool shouldRebuild(_SliverAppBarDelegate oldDelegate) { return false; } } // Just call this inside delegate of SliverPersistentHeader, // give any child and off you go
